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Geology and minerals
Born from the separation of a fragment of Gondwana 80 million years ago, Grande-Terre - the main island of New Caledonia - emerged about 45 million years ago, after a period of oceanic immersion. This uplift process, followed by the sliding of part of the oceanic plate and by erosion, led to the establishment of a metamorphic crust rich in minerals over about a third of the total surface of Grande-Terre including these laterite massifs from the region of Poro.
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